CN205610472U - Intelligence switch power control circuit - Google Patents
Intelligence switch power control circuit Download PDFInfo
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- CN205610472U CN205610472U CN201620339383.XU CN201620339383U CN205610472U CN 205610472 U CN205610472 U CN 205610472U CN 201620339383 U CN201620339383 U CN 201620339383U CN 205610472 U CN205610472 U CN 205610472U
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Abstract
The utility model discloses an intelligence switch power control circuit, including trap, a rectifier module, power converting module, the 2nd rectifier module, stand -by power supply, control circuit, voltage sampling module, protection circuit and current sampling circuit. The utility model discloses intelligence switch power control circuit can export stable magnitude of voltage and current value confession load is used, just detects and feeds back output voltage through voltage and current sampling, has interchange, the compatible input function of direct current simultaneously, consequently has the stable performance, controls advantage accurate and that application scope is wide.
Description
Technical field
This utility model relates to a kind of Switching Power Supply, specifically a kind of intelligent switch power source control circuit.
Background technology
Switching Power Supply is to utilize modern power electronics technology, controls the time ratio that switching tube turns on and off, and maintains a kind of power supply of regulated output voltage, and Switching Power Supply is typically controlled IC and MOSFET by pulse width modulation (PWM) and constitutes.Development and innovation along with Power Electronic Technique so that switch power technology is also innovated constantly.At present, Switching Power Supply is widely used almost all of electronic equipment with small-sized, light weight and high efficiency feature, is that current electronics and information industry develops rapidly indispensable a kind of power mode.
Utility model content
The purpose of this utility model is to provide a kind of intelligent switch power source control circuit, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of intelligent switch power source control circuit, including trap circuit, first rectification filtering module, power conversion module, second rectification filtering module, stand-by power supply, control circuit, voltage sampling module, protection circuit and current sampling circuit, described trap circuit connects voltage input end respectively, stand-by power supply and power conversion module, power conversion module is also respectively connected with control circuit, second rectification filtering module, described control circuit is also connected with voltage sampling blocks current sampling module, protection circuit and stand-by power supply, second rectification module is also connected with signal output part OUT1, signal output part OUT1 is also connected with voltage sampling module and current sampling module.
nullAs preferred version of the present utility model: described voltage sampling module includes diode D1、Resistance R1、Resistance R2 and photo-coupler IC1，The negative electrode of diode D1 connects power supply VCC，The anode of diode D1 connects the negative electrode of diode D2、Electric capacity C1、Electric capacity C2、Resistance R2、The foot 4 of photo-coupler IC1 and signal output part OUT，The foot 3 of photo-coupler IC1 connects resistance R1，The other end of resistance R2 connects the other end of electric capacity C1、The other end of electric capacity C2 and the anode of diode D2 ground connection，The other end of resistance R1 connects resistance R3、Resistance R4 and power supply VCC，The other end of resistance R3 connects the foot 1 of photo-coupler IC1，The foot 2 of photo-coupler IC1 connects the other end of resistance R4、Electric capacity C3 and the negative electrode of three end adjustable reference source Q1，The other end of electric capacity C1 connects resistance R5，The other end of resistance R5 connects resistance R6、Resistance R7 and the reference pole of three end adjustable reference source Q1，The anode of three end adjustable reference source Q1 connects resistance R7 ground connection，The other end of resistance R6 connects signal input part IN，The model of photo-coupler IC1 is 4N25.
As preferred version of the present utility model: described control circuit selects AT89 series monolithic.
As preferred version of the present utility model: the model of described three end adjustable reference source Q1 is TL431.
Compared with prior art, the beneficial effects of the utility model are: this utility model intelligent switch power source control circuit can export stable magnitude of voltage and current value for load, and output voltage detected by voltage and current sampling and feeds back, there is alternating current and direct current compatibility input function simultaneously, therefore there is stable performance, control advantage accurate and applied widely.
Accompanying drawing explanation
Fig. 1 is the system block diagram of intelligent switch power source control circuit,
Fig. 2 is the circuit diagram of voltage detection module.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, 2, in this utility model embodiment, a kind of intelligent switch power source control circuit, including trap circuit, first rectification filtering module, power conversion module, second rectification filtering module, stand-by power supply, control circuit, voltage sampling module, protection circuit and current sampling circuit, described trap circuit connects voltage input end respectively, stand-by power supply and power conversion module, power conversion module is also respectively connected with control circuit, second rectification filtering module, described control circuit is also connected with voltage sampling blocks current sampling module, protection circuit and stand-by power supply, second rectification module is also connected with signal output part OUT1, signal output part OUT1 is also connected with voltage sampling module and current sampling module.
nullVoltage sampling module includes diode D1、Resistance R1、Resistance R2 and photo-coupler IC1，The negative electrode of diode D1 connects power supply VCC，The anode of diode D1 connects the negative electrode of diode D2、Electric capacity C1、Electric capacity C2、Resistance R2、The foot 4 of photo-coupler IC1 and signal output part OUT，The foot 3 of photo-coupler IC1 connects resistance R1，The other end of resistance R2 connects the other end of electric capacity C1、The other end of electric capacity C2 and the anode of diode D2 ground connection，The other end of resistance R1 connects resistance R3、Resistance R4 and power supply VCC，The other end of resistance R3 connects the foot 1 of photo-coupler IC1，The foot 2 of photo-coupler IC1 connects the other end of resistance R4、Electric capacity C3 and the negative electrode of three end adjustable reference source Q1，The other end of electric capacity C1 connects resistance R5，The other end of resistance R5 connects resistance R6、Resistance R7 and the reference pole of three end adjustable reference source Q1，The anode of three end adjustable reference source Q1 connects resistance R7 ground connection，The other end of resistance R6 connects signal input part IN，The model of photo-coupler IC1 is 4N25.
Control circuit selects AT89 series monolithic.
The model of three end adjustable reference source Q1 is TL431.
Operation principle of the present utility model is: input voltage enters after trap circuit to the first rectification filtering module from IN, obtains high-voltage dc voltage.High-voltage d. c inverse transform is become the high-frequency ac of about 35kHz, the voltage needed for high frequency transformer transforms to output by power conversion module, then obtains output voltage through the second rectification filtering module.Control circuit, to output voltage and output current sampling, produces pulsewidth modulation (PWM) signal and controls circuit for power conversion after closed loop feedback, make output voltage or electric current keep stable.Accessory power supply is also to be made up of Switching Power Supply.Owing to having fully phased out Industrial Frequency Transformer, thus there is alternating current and direct current compatibility input function.Output voltage stabilizing and constant current be all from outlet side sample, thus can accomplish highly stable reliably.Protection circuit provides output overvoltage to cross the defencive functions such as stream.
Voltage sampling module in Fig. 2 is constituted with the asking of three terminal regulator Q1 and photoelectrical coupler IC1.The LED strip connection of Q1 Yu IC1 primary side, the electric current that Q1 negative electrode flows through is exactly the electric current of the light emitting diode within photoelectrical coupler IC1.After the potential-divider network that the voltage of IN input forms via resistance R5, resistance R6 and resistance R7, form reference voltage compare with the 2.5V reference voltage three terminal regulator Q1, the negative electrode of three terminal regulator Q1 is formed error voltage, the operating current making the light emitting diode within photoelectrical coupler IC1 changes, by optocoupler, the current signal of change being converted to voltage signal again make a gift to someone outfan OUT, the voltage of output is sent in control circuit.
Claims (4)
1. an intelligent switch power source control circuit, including trap circuit, first rectification filtering module, power conversion module, second rectification filtering module, stand-by power supply, control circuit, voltage sampling module, protection circuit and current sampling circuit, it is characterized in that, described trap circuit connects voltage input end respectively, stand-by power supply and power conversion module, power conversion module is also respectively connected with control circuit, second rectification filtering module, described control circuit is also connected with voltage sampling blocks current sampling module, protection circuit and stand-by power supply, second rectification module is also connected with signal output part OUT1, signal output part OUT1 is also connected with voltage sampling module and current sampling module.
nullIntelligent switch power source control circuit the most according to claim 1，It is characterized in that，Described voltage sampling module includes diode D1、Resistance R1、Resistance R2 and photo-coupler IC1，The negative electrode of diode D1 connects power supply VCC，The anode of diode D1 connects the negative electrode of diode D2、Electric capacity C1、Electric capacity C2、Resistance R2、The foot 4 of photo-coupler IC1 and signal output part OUT，The foot 3 of photo-coupler IC1 connects resistance R1，The other end of resistance R2 connects the other end of electric capacity C1、The other end of electric capacity C2 and the anode of diode D2 ground connection，The other end of resistance R1 connects resistance R3、Resistance R4 and power supply VCC，The other end of resistance R3 connects the foot 1 of photo-coupler IC1，The foot 2 of photo-coupler IC1 connects the other end of resistance R4、Electric capacity C3 and the negative electrode of three end adjustable reference source Q1，The other end of electric capacity C1 connects resistance R5，The other end of resistance R5 connects resistance R6、Resistance R7 and the reference pole of three end adjustable reference source Q1，The anode of three end adjustable reference source Q1 connects resistance R7 ground connection，The other end of resistance R6 connects signal input part IN，The model of photo-coupler IC1 is 4N25.
Intelligent switch power source control circuit the most according to claim 1, it is characterised in that described control circuit selects AT89 series monolithic.
Intelligent switch power source control circuit the most according to claim 2, it is characterised in that the model of described three end adjustable reference source Q1 is TL431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620339383.XU CN205610472U (en) | 2016-04-21 | 2016-04-21 | Intelligence switch power control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620339383.XU CN205610472U (en) | 2016-04-21 | 2016-04-21 | Intelligence switch power control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205610472U true CN205610472U (en) | 2016-09-28 |
Family
ID=56969800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620339383.XU Expired - Fee Related CN205610472U (en) | 2016-04-21 | 2016-04-21 | Intelligence switch power control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205610472U (en) |
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2016
- 2016-04-21 CN CN201620339383.XU patent/CN205610472U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20170421 |